The Histography project is an interactive visualization which records all events in our history into a singe page. It was created by an interactive designer named Matan Stauber.
The visualization use dot as mark. Each dot corresponds to a historical event. There only channel of the mark is its size. Some important events have larger size. All the data come from Wikipedia entries. When you click on a dot, the detail information of this event will show up.
There are many different ways you can browse the Histography. Either you can use the bottom slider to explore the events in a range of time or you can then filter down by category: for example, by music, religions, inventions. However, the data could be further categorized and adopting different levels of filters. It could help user target the events they interest in more easily. Also, the whole page could be zoom in and zoom out and applying more channels to encode the data. For example, it could reference another history Viz called ChronoZoom, which has the zoom in/out feature and a classified timeline.
Reference:
http://www.citylab.com/design/2015/10/14-billion-years-in-1-animated-data-viz/410323/
http://www.chronozoom.com/#/t00000000-0000-0000-0000-000000000000@x=0